[issue19764] subprocess: use PROC_THREAD_ATTRIBUTE_HANDLE_LIST with STARTUPINFOEX on Windows Vista

[STINNER Victor]

Changes by STINNER Victor <victor.stinner at gmail.com>:


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components: +Windows
nosy: +paul.moore, steve.dower, tim.golden, zach.ware
type: enhancement -> resource usage

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue19764>
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